The content of the invention
The technical problem to be solved in the present invention is the attachment structure between the ring bodies recess of existing synthetic resin retainer
Complexity, recess shapes are complicated, performance difficulty, processing, rigging error, influence ring bodies recess and ball quality of fit easily occur
A kind of technical problem, there is provided simple structure, is suitable to the synthetic resin shape wave ball bearing retainer of fast state work.
In order to solve the above-mentioned technical problem, the present invention is adopted the technical scheme that:A kind of retainer, including it is wavy
Annular solid A and wavy annular solid B, retainer is synthetic resin shape wave ball bearing retainer, wavy annular solid A and wave
Recess and shoulder interphase distribution on shape annular solid B;Wavy annular solid A and wavy annular solid B is by a shoulder
Shoulder tapered openings cooperate together with the shoulder tapered cylinders on another shoulder, recessed on two wavy annular solids
Portion is relative to form pocket hole;It is axial plane with the wavy annular solid A and the plane of wavy annular solid B that separate pocket hole, with flat
Partial wave wave-like annular solid and the plane parallel with the circumference of retainer are sagittal plane, and pocket hole most prominent two is connected on sagittal plane
The rectilinear direction of point is for radially, sagittal plane is that axially recess inner surface is concave ball surfaces, spill ball with the intersection of axial plane
The ratio of the radius SR1 in face and the radius SR of ball is 1.08~1.20, the centre of sphere of ball and the centre of sphere of concave ball surfaces diametrically, ball
The centre of sphere on the intersection point of radial direction with axial direction, the centre of sphere of concave ball surfaces is biased to away from concave ball surfaces direction, the ball of concave ball surfaces
The heart is with the offset or dish of the centre of sphere of ball(0.02~0.07)SR1;Connected by fillet between recess shape sphere and shoulder faying face
Connect, fillet is R0.3~R2.0.
Shoulder tapered cylinders and shoulder tapered openings coordinate, by the relative connection of two wavy annular solids, shoulder tapered pole
Body is inserted into inside shoulder tapered openings, both cone match, to minimum, is bored therefore, it is possible to by clearance control between the two
Shape cylinder and tapered openings simple structure, easy to assembly, accurate positioning.Axial plane is by the wavy annular solid A's of retainer
Concave ball surfaces separate with the concave ball surfaces of wavy annular solid B, the wavy annular solid of sagittal plane decile and with the week of retainer
To parallel, axial plane is mutually perpendicular to sagittal plane, axially circumferential consistent with retainer, radially intersects with axially vertical.
More than the radius SR of ball, it is h, SR1- that the centre of sphere of concave ball surfaces biases a segment distance with the centre of sphere of ball to the radius SR1 of concave ball surfaces
SR-h>0, the centre of sphere biased direction of concave ball surfaces is to leave the direction of shoulder, in other words the centre of sphere of the centre of sphere of concave ball surfaces from ball
In the space of another concave ball surfaces for extending radially into pocket hole.The radius SR1 of concave ball surfaces, the radius SR, SR1/SR of ball
Less than 1.08, easy card ball, ball motion is dumb, and friction is big, serious wear, and SR1/SR is more than 1.20, ball and concave ball surfaces it
Between gap it is excessive, easily collision form noise, to retainer produce impact stress, make the retainer vibration in rotation, increase rubs
Wipe torque.Offset or dish h makes recess inner surface be reduced in radial direction, and change in size is smaller by contrast for axial direction, so that
Form the structure of American football shape.Offset or dish h be concave ball surfaces formed American football shape structure significant dimensions, determine ball with it is recessed
Shape sphere gap diametrically, offset or dish h is more than 0.07SR1, and gap of the ball with concave ball surfaces diametrically is too small, lubrication
Fat is not easy storage, causes lubricating ability to decline, and less than 0.02SR1, gap of the ball with concave ball surfaces diametrically is excessive, rotates
Middle retainer exacerbates the collision between retainer and ball easily in radial and axial vibration, causes noise to increase, high velocity impact
Also the easily abrasion of aggravation ball and retainer.Distance of the concave ball surfaces with ball diametrically is small, can limit wavy annular solid
With ball in the mutual vibration of radial direction, wavy annular solid and ball in the axial direction in larger distance increase the storage capacity of lubricating grease,
Friction is reduced, abrasion and noise is reduced.The ratio of the radius SR1 of concave ball surfaces and the radius SR of ball and the centre of sphere of concave ball surfaces with
The offset or dish h of the centre of sphere of ball determines shape and the position of American football shape structure.The design concept of the present invention and documents
Difference, documents are face contacts, and abnormal heating, abrasion are avoided with the space formed between barrel surface and ball, and of the invention
With concave ball surfaces not with ball directly contact, even if contact is also contact, so at high speeds, either due to centrifugal force
Make the outside side shifting of concave ball surfaces, or expanding deformation, the influence to frictional force between ball and recess inner surface is minimum, Bu Huifa
Raw abnormal heating, abrasion.Concave ball surfaces mutually intersect generation sharp edge, sharp edge position stress concentration, to retainer with shoulder faying face
Intensity have a negative impact, sharp edge makes the gap between ball and concave ball surfaces smaller, and the storage capacity of lubricating grease is less.Spill ball
Fillet connection between face and shoulder faying face, reduces the stress of binding site, increases the storage capacity of lubricating grease.Fillet R is less than 0.3
Stress concentration can not be effectively eliminated, lubricating grease storage increment is few, and fillet R reduces the area of shoulder faying face more than 2.0, to ripple
The combination of wave-like annular solid is unfavorable, while the excessive gap for increasing ball and concave ball surfaces, makes to be produced between ball and concave ball surfaces
Collision and noise.Due to there is offset or dish, the radius of concave ball surfaces must be more than the radius of ball, and the pocket hole of formation could accommodate
Ball, offset or dish coordinates with fillet, and recess inner surface can form preferable hemispherical, relative after two wavy annular solid combinations
The combination of recess inner surface and fillet form a complete American football shape structure.Synthetic resin shape wave ball axle of the invention
Hold retainer simple structure, be easily worked, rigging error it is small, be suitable to fast state work.
The resin material of synthetic resin shape wave ball bearing retainer is polyamide nylon PA66, nylon PA46 or polyphenylene sulfide
Ether PPS;Or carry out strengthened polyamide nylon PA66, nylon PA46 or polyphenylene sulfide using glass fibre or carbon fiber
PPS。
The height of shoulder tapered cylinders is more than the depth of shoulder tapered openings, and shoulder tapered cylinders are matched somebody with somebody with shoulder tapered openings
The part that shoulder is higher by after conjunction is melted using fusion techniques, by shoulder tapered cylinders and the shoulder with shoulder tapered openings
Portion's fusion is integrated.Wavy annular solid A and wavy annular solid B are fused into one using welding mode, firm.
The area of shoulder tapered openings is the 1/8~1/3 of shoulder faying face area, and shoulder tapered cylinders are in shoulder faying face
On the area that occupies be the 1/8~1/3 of shoulder faying face area.Control shoulder tapered openings and shoulder tapered cylinders are in shoulder knot
The area occupied on conjunction face, makes shoulder have good bond strength and manufacturability.
The area of shoulder tapered openings is the 1/5~1/4 of shoulder faying face area, and shoulder tapered cylinders are in shoulder faying face
On the area that occupies be the 1/5~1/4 of shoulder faying face area.1/5~1/4 is preferred data.
The centre of sphere of concave ball surfaces is biased to away from concave ball surfaces direction, the offset of the centre of sphere of concave ball surfaces and the centre of sphere of ball
From for(0.04~0.06)SR1.Offset or dish is(0.04~0.06)SR1 is preferred data.
The ratio of the radius SR1 of the concave ball surfaces and radius SR of ball is 1.12~1.18.1.12~1.18 is preferred number
According to.
Connected by fillet between recess shape sphere and shoulder faying face, fillet is R0.5~R1.2.R0.5~R1.2 is
Preferred data.
The corresponding convex portion outer surface of concave ball surfaces on wavy annular solid A and wavy annular solid B is convex spherical, convex
The ratio of the radius SR2 of the shape sphere and radius SR1 of concave ball surfaces is 1.20~1.50;The centre of sphere of convex spherical diametrically,
Biased to away from concave ball surfaces direction, the centre of sphere of convex spherical is with the offset or dish of the centre of sphere of ball(0.08~0.17)SR2.It is convex
The radius of shape sphere is big, and the intensity of retainer is high, but the space for occupying is big, for ball bearing, the ball for particularly sealing
Bearing, inner space is limited, even and if resin material is strengthened using glass fibre or carbon fiber, its intensity is differed with steel
It is very remote, it is therefore desirable to the intensity of retainer is improved in limited space.The radius SR2 of convex spherical, the radius of concave ball surfaces
SR1, SR2>SR1, the centre of sphere of convex spherical biases a segment distance with the centre of sphere of ball, and the centre of sphere biased direction of convex spherical is to leave
The direction of shoulder, in other words the centre of sphere of convex spherical the sky of another concave ball surfaces in pocket hole is extended radially into from the centre of sphere of ball
Between in.Offset or dish j makes convex portion outer surface increase small compared with the increase in other directions in radial direction compared with corresponding concave ball surfaces, from
And make the American football shape structure more prolates that two convex sphericals are formed, retainer bearing face protrude it is smaller, but by force
It is notable that degree increases,(j-h)>0.The ratio of the radius SR2 of the convex spherical and radius SR1 of concave ball surfaces is less than 1.20, pocket hole
Wall thickness it is excessively thin, retainer low intensity is easily deformed, ratio be more than 1.50, the wall thickness in pocket hole is blocked up, and bearing space is difficult to hold
Receive, while the area of shoulder reduces, influence the positioning assembling of wavy annular solid A and wavy annular solid B.Offset or dish j is big
In 0.17SR2, partially thin, the particularly radial bottom of the wall thickness in pocket hole, insufficient strength, less than 0.08SR2, the wall thickness mistake in pocket hole
Thickness, particularly radial bottom, influence is installed.The depth k of concave ball surfaces, the height m of convex spherical, the wall thickness at radial direction two ends is
M-k, i.e. SR2-SR1- (j-h), m-k>0.
The corresponding convex portion outer surface of concave ball surfaces on wavy annular solid A and wavy annular solid B is convex spherical, convex
The ratio of the radius SR2 of shape sphere and the radius SR1 of concave ball surfaces is 1.30~1.40, the centre of sphere of convex spherical diametrically,
Biased to away from concave ball surfaces direction, the centre of sphere of convex spherical is with the offset or dish of the centre of sphere of ball(0.10~0.14)SR2.It is convex
The ratio of the radius SR2 of the shape sphere and radius SR1 of concave ball surfaces is 1.30~1.40 and offset or dish is(0.10~0.14)
SR2 is preferred data.
The effect that friction is reduced, high speed performance is improved can be obtained using the ball bearing of retainer of the present invention.The present invention is protected
Even if using being not easy to be deformed under holding ultrahigh speed rotational case of the frame in dmn values more than 1,000,000, therefore, use this hair
The ball bearing of bright retainer is adapted to use at high speeds, for example, apply in engine, alternating current generator, idle pulley and tensioning wheel
In.
It is an advantage of the invention that:Plastic wavy annular solid A and wavy annular solid B is small by shoulder taper
Hole cooperates together with shoulder tapered cylinders, and attachment structure is simple, easy to assembly, accurate positioning.The radius of concave ball surfaces
More than the radius of ball, a segment distance is biased with the centre of sphere of ball, offset or dish makes recess inner surface be reduced in radial direction, axial direction side
Smaller to change in size by contrast, so that two concave ball surfaces form the structures of American football shape, concave ball surfaces are not direct with ball
Contact, even if contact is also a contact, at high speeds, will not occur abnormal heating, abrasion.Fillet avoids stress collection
In, increased the storage capacity of lubricating grease.Simple structure of the present invention, be easily worked, rigging error it is small, be suitable to fast state work.
Specific embodiment
It is described with reference to the drawings.
The retainer of the present embodiment is that the shape wave ball bearing that carbon fiber is made to polyamide nylon PA66 reinforcement materials keeps
Frame, in practical application, also through being strengthened frequently with glass fibre.Shoulder tapered openings 3, ripple are carried on wavy annular solid A1
Shoulder tapered cylinders 4, recess and shoulder 5 on wavy annular solid A1 and wavy annular solid B2 are carried on wave-like annular solid B2
Interphase distribution, the relative formation pocket hole of recess on two wavy annular solids.Except shoulder tapered openings 3 and shoulder tapered cylinders
4 is different outer, and wavy annular solid A1 and wavy annular solid B2 are identicals.Two shoulder knots of wavy annular solid shoulder 5
Conjunction face 10 coordinates, and shoulder tapered cylinders 4 coordinate with shoulder tapered openings 3, and shoulder tapered cylinders 4 are higher by wavy annular in Fig. 1
The upper plane of the shoulder 5 of body A1, the raised area will be melted using fusion techniques, and the shoulder 5 with wavy annular solid A1 melts
It is integrated, wavy annular solid A1 and wavy annular solid B2 is connected as a single entity composition retainer, the shoulder cone shown in Fig. 1
Shape cylinder 4 is not melted also.The area of shoulder tapered openings 3 is the 1/4 of the area of shoulder faying face 10, shoulder tapered cylinders 4
The area occupied on shoulder faying face 10 is the 1/4 of the area of shoulder faying face 10.
The ball 7 of the present embodiment is steel ball.The wavy annular solid A and wavy annular in pocket hole are constituted in the present invention to separate
The plane of body B is axial plane, to divide wavy annular solid equally and the plane parallel with the circumference of retainer is sagittal plane, axle
It is mutually perpendicular to sagittal plane to plane, the rectilinear direction in most prominent 2 points of pocket hole is connected on sagittal plane radially, radially to put down
Face is axial direction with the intersection of axial plane, is radially intersected with axially vertical.Fig. 1 planes are sagittal planes in the present embodiment, cross water
The flat center line plane vertical with Fig. 1 planes is axial plane, the medium wave wave-like annular solid A1 peaks of connection figure 1 and wavy ring
The rectilinear direction of body B2 minimum points is that radially, horizontal center line is axially.Recess inner surface 6 is concave ball surfaces, concave ball surfaces
The centre of sphere and ball 7 the centre of sphere diametrically, the centre of sphere of ball 7 on the intersection point of radial direction with axial direction, the spill of wavy annular solid A1
The centre of sphere of sphere, in the lower section of axial direction, is h with the centre of sphere offset or dish of ball 7, and the offset or dish h of the present embodiment is 0.05SR1, figure
Ball 7 and the gap of the concave ball surfaces peak of wavy annular solid A1 are n, the depth k, k of concave ball surfaces in 1>SR, k<SR1, k=
SR1-h.Top of the centre of sphere of the concave ball surfaces of wavy annular solid B2 in axial direction.The radius of ball 7 is SR, wavy annular solid
The radius of concave ball surfaces is SR1, and SR1/SR is 1.15.
The concave ball surfaces of wavy annular solid A1 and wavy annular solid B2 are connected with shoulder faying face 10 by R0.8 fillets 8
Connect.Due to the effect of offset or dish h, concave ball surfaces are made to be reduced in radial direction, and axial direction change in size very little, so that
Pocket hole forms the structure of rugby ball shape.The outer wall in wavy annular solid A1 and wavy annular solid B2 pockets hole is convex portion outer surface
9, convex portion outer surface 9 is convex spherical, convex spherical as concave ball surfaces, the centre of sphere also diametrically, wavy annular solid
The radius of convex spherical is SR2, and the centre of sphere of the convex spherical of wavy annular solid A1 is in the lower section of axial direction, the centre of sphere of convex spherical
It is j with the centre of sphere offset or dish of ball 7, the offset or dish j of the present embodiment is 0.12SR2, and SR2/SR1 is 1.30, convex spherical
Height m, m<SR2, m=SR2-j.Top of the centre of sphere of the convex spherical of wavy annular solid B2 in axial direction.